Vaishakh Rajan K
  • Member for 9 years, 4 months
  • Last seen more than 1 year ago
  • Bangalore, Karnataka, India
How can I understand a Vortex Tube and its efficiency?
5 votes

I have performed few tests with Vortex tube to find its efficiency comparing with a refrigeration system.objective was to determine whether we can use compressed air or CO2 to replace refrigeration ...

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Boiling noodles
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5 votes

When water starts to get hot, a lot of bubbles will form down the walls of your container. These bubbles are air. water has a lot of air dissolved on it. Then, as the boiling point of water is reached ...

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Why does sound travel faster in iron than mercury even though mercury has a higher density?
3 votes

The square of the sound velocity is proportional to the ratio of an elastic modulus to the mass density of the material.The reason why the sound velocity is usually larger in solids than in liquids ...

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Relationship between boiling point and pressure
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3 votes

The boiling point is the temperature at which the vapor pressure of the liquid equals the pressure at enviornment of liquid and the liquid changes to vapor. A liquid in a vacuum has a lower boiling ...

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Why does the blade height goes on decreasing in a multi-stage axial flow compressor?
2 votes

The blade size reduction is to achieve large pressure rises.the pressure is proportional to the volume.Axial flow compressors produce a continuous decelerating flow of compressed gas,for high ...

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Electric heating rod
2 votes

The reason why you got electric shock is because the way you kept it in the bucket is improper or device is faulty. You might have noticed that there is an aluminum hook along with the plate extending ...

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Calculating force absorbed by compression of a material (i.e. rubber)
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2 votes

let me assume that there is a force due to impact from a falling object mass(M) from certain height-h Once it hits the padding, it continues to descend by an amount (u) until all the impact energy is ...

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Why planes have propellers in front but watercraft have them behind?
2 votes

For an aeroplane while flying its stability is very important.the heaviest part in a plane are its engines.to get better stability the engines have to be placed in the right place considering its ...

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Why is heat transfer better from within circular tubes versus ex. square tubes?
1 votes

the shape and area of the cross section of the pipe can change flow property along the stream. The fluid velocity in a pipe changes from zero at the surface because of the no-slip condition to a ...

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Accelerated liquid in a U-tube
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1 votes

The difference in water column changes depends on how fast you accelerate.the pressure in the sealed side is compensated by the difference in water column height on the open side of the tube.this ...

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What is the buoyant and viscous force acting on a ball in free fall?
1 votes

Buoyant force is a force acts exactly opposite to gravitational force. The slower velocity of ball moving thru liquid is due to drag of viscous fluid. When we say weightlessness of ball, it only ...

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Would the temperature of a gas change when accelerated in a train?
1 votes

The temperature is the kinetic energy of the gas molecules within the container. if you can measure the slightest of slightest variation in temperature of gas, then you will find temperature has ...

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Why does the milk frother on my coffee machine make so much noise?
1 votes

There is a lot of protein in milk, so when it is heated with steam, the water evoporates and protein start to foam around the steam wand. Due to tiny holes on the steam wand, the velocity of the jet ...

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Should water cool faster if is inserted metal canister with ice inside either mix only with ice?
0 votes

Ice absorbs heat from the boiling water by melting. That means, if you put ICE in water, it increases the volume of liquid and their by its mass. if you are considering only the temperature(Not volume)...

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Why don't we include $\rho g h$ in a hydraulic jack below?
0 votes

Your second equation is correct when there is a piston height difference.this equation is derived from pascal law.law states the initial difference remains same.it only talks what happens when you ...

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View from a helicopter rotor: why is the horizon distorted?
0 votes

The frame rate and the rotor frequency do not exactly match.the picture seems to be clear some times when the rotor reaches its set rpm. But after that the vibration starts with a different noise.the ...

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Why does a picture of a person seem to be looking in the same direction irrespective of the angle of observation?
0 votes

A picture has only two dimensions. Ultimately all depth created through perspective and light and shadow is a trick, similarly eyes in a painting following you is also an illusion. The light, shadow ...

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Determining the minimum pull force of a magnet required to hold it in place
0 votes

It is magnetic field strength determine the suspension of magnet underside of metal.to get it suspended,the magnetic force should be greater than or equal to the weight of the magnet itself.

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how to reduce pressure drop in a 5/16 ss tube
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0 votes

I couldn’t get any answer for this question and so ended up in performing experiments in the lab to find answer by myself. To reduce my dynamic pressure drops in the SS tube. The factors externally (...

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Water Level and Pipe Widths
0 votes

If you are concerned about the water height differences, then Every wash basin/toilet will have an over flow holes just around the lip of the toilet or just below the top surface of the wash basin. ...

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Where does the "g" force that pilots experience come from?
0 votes

Let me simplify it. We know that $F=mg$, where $g$ is the acceleration due to gravity. Weight has the measurement of force (Newton) so if you are 50Kg, that means your mass times 9.8M/Sec^2 ...

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Why does my refrigerator door resist opening?
-1 votes

the door has magnetic lock inside the seal to close.check out by placing a piece of iron on the seal.but remove it while closing.when the door is closed, the seal around it compresses and closes all ...

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Does more rain strike a vehicle while moving or while stopped (or neither)?
-3 votes

Both the car should get same amount of rain. if you keep 2 buckets(one 10"dia & another 20" dia)in the rain, irrespective of diameter diff in bucket, you will get same height of water in it. this ...

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